List of figures M27W512
4/22
List of figures
Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. LCC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Programming flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4. AC testing input output waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. AC testing load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. Read mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 7. Margin mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. Programming and verify mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 9. PLCC32 - 32 lead plastic leaded chip carrier, package outline . . . . . . . . . . . . . . . . . . . . . 19
Obsolete Product(s) - Obsolete Product(s)
M27W512 Description
5/22
1 Description
The M27W512 is a low-voltage, 512 Kbit OTP (one-time programmable) EPROM. It is
ideally suited to microprocessor systems and are organized as 65536 by 8 bits.
The M27W512 operates in the read mode with a supply voltage as low as 2.7 V at –40 to
85 °C temperature range. The decrease in operating power allows either a reduction of the
size of the battery or an increase in the time between battery recharges.
For applications where the content is programmed only one time and erasure is not
required, the M27W512 is offered in PLCC32 packages.
Figure 1. Logic diagram
AI01584
16
Q0-Q7
V
CC
M27W512
GV
PP
V
SS
8
A0-A15
E
Obsolete Product(s) - Obsolete Product(s)
Description M27W512
6/22
Figure 2. LCC connections
Table 1. Signal names
Signal names Function
A0-A15 Address inputs
Q0-Q7 Data outputs
E
Chip Enable
GV
PP
Output Enable / Program supply
V
CC
Supply voltage
V
SS
Ground
NC Not connected internally
DU Don’t use
AI01585
A13
A8
A10
Q4
17
A0
NC
Q0
Q1
Q2
DU
Q3
A6
A3
A2
A1
A5
A4
9
A14
A9
1
A15
A11
Q6
A7
Q7
32
DU
V
CC
M27W512
A12
NC
Q5
GV
PP
E
25
V
SS
Obsolete Product(s) - Obsolete Product(s)

M27W512-100K6TR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
EEPROM 512 KBIT Low Volt OTP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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